<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>离线模式 - HyperChat</title>
    <style>
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100vh;
            margin: 0;
            padding: 20px;
            text-align: center;
            color: #333;
            background-color: #f9f9f9;
        }
        .container {
            max-width: 500px;
            padding: 30px;
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        h1 {
            margin-bottom: 20px;
            color: #2c3e50;
        }
        p {
            margin-bottom: 15px;
            line-height: 1.5;
        }
        .icon {
            font-size: 64px;
            margin-bottom: 20px;
        }
        .btn {
            display: inline-block;
            margin-top: 20px;
            padding: 10px 20px;
            background-color: #4a90e2;
            color: white;
            border-radius: 4px;
            text-decoration: none;
            transition: background-color 0.2s;
        }
        .btn:hover {
            background-color: #3a7bc8;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="icon">📡</div>
        <h1>您当前处于离线状态</h1>
        <p>无法连接到服务器，请检查您的网络连接并稍后再试。</p>
        <p>您之前访问过的内容仍然可以使用。</p>
        <a href="/" class="btn">刷新页面</a>
    </div>
</body>
</html>